Ever since reading about the cu-sidhe, I get very nervous whenever a stray dog barks or howls outside my window. Especially when I'm the only person in the room. I know it's superstitious nonsense, but it's like the part of me that's still a little afraid of strange noises when I'm alone in a dark house. I know it's nothing, but I get scared anyway.
If you do, you may not sleep well tonight, considering the howling you just heard outside your window.
I don't actually believe in fairy lore, but I'm fascinated by it, especially the various sidhe. I'm working on a novel about the sidhe. Yes, it's a horror novel since Irish fairies are terrifying, but so much more fun than silly vampires or werewolves. :D